50 Ech. 
ECHlNODLUiMATA. 
t ; Acropeltis cequituberculata , Ag,, Jurassic of Portugal ; de Loriol, (3) 
pp. 93 & 94, pi. xvi, fig. 4. Synonym, A. concinna , Merian. 
t ; Acrosalenia angular in (Ag.), Desor, Jurassic of Portugal; de Loriol, 
(3) pp. 49 & 50, pi. ix, fig. 4. Synonyms: Milnia decorata, Haime. A. 
delgadoi, de Lor., Jurassic of Portugal ; de Loriol, (3) pp. 51 & 52, pi. ix 
fig. 7. A. masconi , Cott., Jurassic of Portugal; id. (3) pp. 53 & 54, 
pi. ix, fig. 10. A. ribeiroi , de Lor., Jurassic of Portugal ; id. (3) pp. 52 & 
53, pi. ix, figs. 8 & 9. A. tenella, de Lor., Jurassic of Portugal ; id. (3) 
pp. 54 & 55, pi. x, figs. 1-7. A. tuberculosa, Ag., v. sub. Pseudnsalenia 
aspera (Ag.), Etallon. A. venusta, de Lor., Jurassic of Portugal ; id. (3) 
pp. 50 & 51, pi. ix, figs. 5 & 6. 
t ; Agassizia cequipetala, Gregory, (3) pp. 39-41, pi. i, fig. 7, Coralline 
Crag, Aldborough ; A. heinzi , Peron & Gauthier, Miocene (F) of ' 
Algeria, see Cotteau, (4) pp. 101-103, pi. ii, figs. 2-5 : n. spp. 
t Alexandria magnifica , Pfeifer, New Caledonia ; de Loriol, (2) pp. 20 
& 21. 
Amblypygus, Ag., definition of genus ; Cotteau, (1) p. 50. 
t ; A. dilutatus, Ag., Eocene of Callosa, Alicante ; id. (1) p. 51. 
A. melitensis , Wriglit, Upper Coralline Limestone, Malta ; Gregory, (4) 
p. 600. 
t ; Amphiope bioculata, Aquitanian and Langhian of Carry, near Mar- 
seilles ; Gourret, p. 130. A. elliptica, Desor, Langhian of Carry, near 
Marseilles, id. ibid. A. palberata, Porael, Miocene of Algeria ; Cotteau, 
(4) pp. 160 & 161. 
iAuanchytes ovata , Lam., from Cretaceous, Russia ; Piatnitzky, pp. 13, 
15, 172, & 174. A. striatus, Lam., from Cretaceous, Russia; id. p. 175. 
A napesus : definition of genus ; Cotteau, (4) pp. 245 & 246. 
t ; A. rnaurus , Pomel, Pliocene of Algeria; id. (4) pp. 249 & 250. A. 
sahelieusis, Pomel, Pliocene of Algeria ; id. (4) pp. 247-249. A. serialis, 
Pomel, Pliocene of Algeria ; id. (4) pp. 250 & 251. 
Arachnoides placenta , L., diagnosis and distribution : Hoyle, p. 
420. 
t ; Arbacina asperata , Pomel, Pliocene of Algeria ; Cotteau, (4) pp 2G0 
& 261. A. massy lea, Pomel, Miocene of Algeria ; id. (4) pp. 258 & 259. 
A. nicaisei , Pomel, Pliocene of Algeria ; id. (4) pp. 261 & 262. A. 
saheliensis , Pomel, Plioceno of Algeria ; id. (4) pp. 259 & 260. 
t; Archceocidaris edgarensis, Wortlien & Miller, from Lower Coal 
Measures, Iowa; Keyes, pp. 245 & 246. A. urei , Flem., Calcareous 
Sandstone and Black Limestone ; Straiian, p. 228. 
t A. legrandensis, n. sp., Miller & Gurley, p. 59, pi. x, fig. Jo, 
Kinderhook Group, Iowa. 
Asthenosoma hystrix, Wyv.-Th., and A. feuestratum, Wyv.-Th., distribu- 
tion and diagnosis ; Hoyle, pp. 407 & 408. 
, fBotriopygus.alabamiensis , n. sp., Clark, p. 76, Cretaceous, Alabama. 
' Breynella, n. g., Gregory, (4) pp. 600 & 601, for iPygorhynchus 
vasalli, Wright, and a new species, t B. equizonatci, n. sp., id. (4) pp. 602 
& 603, pi. ii, figs. 1 a-c, Lower Coralline Limestone, Malta, t B. vasalli , 
